You would say he puhuvat liian lujaa.
Are you okay is "Oletko (sinä) kunnossa?" in Finnish. The subject is often ommitted in Finnish everyday talk.
When you talk loud is "quand tu parles fort" in French.
It depends on the context.In informal talk you can often simply say "on", though it will not be grammatically correct in all situations.For example they are, is he ovat in Finnish. But many would simply say he on.
For you is sinulle in Finnish.
How is miten in Finnish.
I am not Finnish. - (Minä) en ole suomalainen.
Finnish legend in Finnish is "suomalainen legenda".
Onko sinulla aikaa puhua? Or, onko sinulla hetki aikaa puhua? The second one means ''do you have a moment (to talk)?''
Both.
Yes is "kyllä" in Finnish.
Boring is tylsä in Finnish.
Daughter is tytär in Finnish.